fsk_1.m

对常见的调制信号在软件无线电的通用平台下进行调制解调。所有信号均通过正交分解后

clear;
fd=10;
fs=600;
m=randn(1,10);
for i=1:10
    if m(i)>=0
        for j=1:600
           bit(j+(i-1)*600) = 1;
        end
    
    else m(i)<0
        for j=1:600
          bit(j+(i-1)*600) = -1;
        
        end
     
    end;
end;
t=[0:5999];
plot(t,bit);
axis([0,6000,-2,2]);
I = cos(bit.*(t/fs)*2*pi*fd);
Q = -sin(bit.*(t/fs)*2*pi*fd);
t=linspace(0,10,6000);
I=[t',I'];
Q=[t',Q'];